Lamp shade mounting means



July 23, 1940. P. CHILO 2,209,151

LAMP SHADE MOUNTING MEANS Filed March 12, 1958 QWIIIII; "@L

; mmummx Patented July 23, 1940 UNITED STATES PATENT I OFFICE LAMP sna sMOUNTING .MEANS Paul Chilo, Chicago, Ill. Application March 12, 1938,Serial No. 195,451 20mins. (or. 240-148) My invention relates to lampsequipped with shade supporting fixtures in the form of a harp whereinthe shades may be rocked or tilted on their supports.

One of the objects of my invention is to provide improved mounting meanson the harp for the shade and so constructed that the shade will be heldsecurely in the desired tilted position.

It is a further object of my invention to provide a device of but fewparts, inexpensive to construct and assemble and which will function incombination to hold the shade in any desired tilted position on-itssupport against the vibrations or jars to which lamps. are frequentlysubjected when in use.

My invention preferably contemplates clamping means formed out of springmetal and it is a further object of my invention to construct the partsso that the clamping member is sprung out of its initial shape whenmounted on the supporting harp thereby providing a strong spring grip ofthe clamping member on the harp to hold the device in the desiredposition.

It is another object of my invention to provide 2! improved means forthe purpose specified so arranged that the grip of the clamping memberon the supporting means is not loosened by locking the shade in positionon its support.

The preferred means by which I have accom- 80 plished my several objectsare illustrated in the drawings and are hereinafter specificallydescribed. That which I believe to be new and desire to cover by LettersPatent is set forth in the claims. 85 In the drawin 5 Fig. 1 is anelevational view of a. lamp equipped with shade supporting meansembodying the principles of my invention;

Fig. 2 is a view on an enlarged scale partly in elevation and partly insection illustrating the device in position on the top of the harp-likeshade support;

Fig. 3 is a sectional view taken on the line 3-1 of Fig. 2; 6 Fig. 4 isa sectional view taken on the line 4-4 of Fig. 3; and

Fig. 5 is a sectional view of the spring clampingmember in associationwith the shade mounting stud before the clamping member is mounted onthe harp-like support.

Like characters of reference designate like parts in the several views.

The lamp I 0 is provided with a shade support II which is generally inthe form of a harp, the electric lamp bulb I! being positioned withinthe harp and screwed into the lamp socket in the usual manner.

My improved device comprises a clamping member in the form of a plate l3which is provided with oppositely disposed depending arms M. l Themember I3 is formed out of spring sheet metal and initially is in ashape substantially as shown in Fig. 5, the plate portion I3 being bowedand the arms II in positions non-parallel with respect to each other.Each of the arms I4 is L provided with a sleeve-like bearing apreferably formed by drawing the metal into short tubes so asto afford abearing much wider than the thickness' of the metal for receiving thesupporting member H. A mounting element I5 in the form 18 of a threadedstud is provided with a collar l6 adapted to bear against the upper faceof the plate portion Hi, the lower end of the stud extending through anopening In in the plate and then being riveted over or upset against theunder I side of the plate thereby providing an abutment or hearingportion II.

In assembling the parts, the clamping member I! is locked in a suitablefixture to bring its plate portion into substantially flat condition andits I arms parallel to each other. The rigid straight wire to form thesupporting harp may then be easily inserted through the bearings a andunder the abutment H. The clamping member is then freed from the lockingfixture with the re- U suit that it tends strongly to return to itsinitial shape as shown in Fig. 5. The stifiness of the wire forming thesupporting harp, however, holds the clamping member substantially in theposition shown in Fig, 2 with the result that the I clamping membertakes a strong spring grip on the supporting member H. The opposinglever grips exerted by the bearings of the arms ll on the supportingwire i I, aided by the springaction set up in the plate portion I3,effectively prevent a any slippage of the clamping member on the wire inthe direction of its length, and also maintain the clamping member inthe desired tilted position on the wire. The supporting member may thenbe put into a suitable fixture and'the wire I bent into the desired formand mounted on the lamp socket in any suitable manner.

A shade I8 is carried on a frame comprising a collar l9 and'arms 20, thecollar it being adapted to fit snugly around the collar ii of the mount-U ing stud IS. The shade is locked in position with the collar l9bearing on the, spring clamp I: by means of a nut or finial 2| threadedon the stud l5 against the collar i9 as clearly shown in Fig. 2. I

It will vbe apparent that the clamping means described is well adaptedfor its purpose. The parts are inexpensive to construct and can bereadily assembled. Since the spring clamping means is sprungconsiderably out of its initial shape in mounting it on the supportingharp a strong spring pressure is applied to the supporting harp throughthe bearings a and the abutmentl'I. ll'he relatively wide bearings I laprevent the arms i'rom cutting into the supporting harp which, ofcourse, would be objectionable and tend to loosen the grip of the deviceon the supporting harp. It will also be noted that tightening thefinial2| on the stud l5 does not tend to loosen the grip of the clampingmember on the supporting harp. The collar l6 serves as means to'hold theshade in centered position with respect to its support.

I do not intend to limit the invention to the details of constructionshown and described, ex-.

cept only in so far as certain 01 the appended claims are specificallyso limited, as it will be obvious that modifications may be made withoutdeparting from the principles of the invention.

I claim:

1. In a shade supporting device for lamps, the combination of asupporting member having a rigid straight substantially horizontalportion and downwardly extending side portions, and a clamping member ofspring material in the form of a yoke comprising a central bowedplateportion and spaced arms extending downwardly and outwardly from theplate portion, each of said arms having a bearing surface comprising anopening through which said straight portion extends, said plate portionhaving abutment means strongly pressing against the opposite side ofsaid straight portion. I

2. In a shade supporting device for lamps, the combination of asupporting member having a rigid straight portion circular in crosssection, a clamping member or spring material in the -form. of a yokecomprising a central bowed plate portion and spaced arms extendingdownwardly and divengently from the plate portion, each of said armshaving a sleeve-like bearing through which said straight portionextends, and a mounting element extending through said plate portionhaving shoulder means bearing'against ,the under side thereof. andforming an-abutment between said arms, said clamping member when inoperative position on said straight portion being held with its plateportion straightened from said bowed shape and with its arms sprung intoparallelism from said divergent relation whereby said abutment bearsstrongly against the side oi 'said straight portion adjacent the plateportion and portions of said sleeve-like bearings engage strongly theopposite side of said straight por- PAUL CHILO.

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